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Latest / NASA’s Astronomy Picture of the Day

2025 July 22 - A Double Detonation Supernova

In today's image, we see a remnant left behind by a supernova that exploded about 400 years ago. It is considered a double detonation because an initial explosion on the surface of the white dwarf star causes a compression in the star which then triggers another explosion.My podcasts are available in video form through this YouTube Channel.This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.I…

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